Features:<br />HSS Drill Bit Set For Wood， Plastic and Aluminum， Copper， Steel<br />Ideal For DIY， Home and General Building/Engineering Using<br />High speed steel，Durable.<br /><br />Specification:<br />Material: High Speed Steel<br />Surface : Titanium Coated<br />Head: Hex<br />Head Diameter: 7mm<br />Containing Model:3.0mm， 4.0mm， 5.0mm<br />Model &amp; QTY &amp; Length<br />3.0mm : 5pcs，Length : 78mm<br />4.0mm : 5pcs，Length : 92mm<br />5.0mm : 5pcs，Length : 102mm<br />Quantity: 1 Set (15Pcs)<br /><br />Package included :<br />5 x 3.0mm HSS Drills<br />5 x 4.0mm HSS Drills<br />5 x 5.0mm HSS Drills<br /><br /><br />